For the full monty of key bindings in Emacs, you can start with C-h b
(or, equivalently, M-x describe-bindings
). You can also check out this terrifyingly long table of default bindings. That's probably way more than you want or need right now, though.
Here's a list of default OSX system key bindings. The ones you're probably interested in are the ^ + LETTER
keys, many of which are analogous to Emacs bindings.
A post on Irreal about Emacs Keybindings for Mac OS X talks about this system, and points out that the Cocoa Text System is customizable, which would allow you to add additional Emacs bindings (or whatever else you like). There's a link in the post that points to a keybindings file that creates a lot of those bindings.